It's fine to go to the nail salon, you just can't be around the fumes 24/7 but an hour for a pedicure us just fine.(: especially being that far along.
Both are fine. I would avoid a little shop that does fake nails tho and go to a spa or something but there are tons of pregnant women with fake nails who have perfectly healthy babies so either way I'd say your safe.
I would just ask for a face mask to cut down on the fumes but I'm pretty sure its fine to I plan to get my nails feet and eyebrows done my whole pregnancy It just makes me feel better!